让AI为你打工,腾讯混元大模型实战篇
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👉目录
01
例如:你是以为优秀的 Java 软件开发人员。您的工作是使用 Java 语言 和 SpringBoot 框架开发应用程序和架构代码。下面我将为你提供一些关于 Java Web 应用程序要求的具体信息,请您根据具体信息,给出解决办法。
请我提供一个基于 SpringBoot 的框架,包含 pom.xml 和 yml 文件的配置,需要连接 MySQL 数据库。
pom.xml
<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.6.1</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.example</groupId><artifactId>spring-boot-mysql</artifactId><version>0.0.1-SNAPSHOT</version><name>spring-boot-mysql</name><description>Spring Boot with MySQL</description><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>
spring:datasource:url: jdbc:mysql://localhost:3306/your_database_name?useSSL=false&serverTimezone=UTCusername: your_database_usernamepassword: your_database_passworddriver-class-name: com.mysql.cj.jdbc.Driverjpa:hibernate:ddl-auto: updateproperties:hibernate:dialect: org.hibernate.dialect.MySQL5InnoDBDialectshow-sql: true
your_database_name、your_database_username和your_database_password替换为您的 MySQL 数据库的实际信息。这个配置将帮助您的 SpringBoot 项目连接到 MySQL 数据库。请帮我基于 MySQL 设计 user 用户表,根据上述的 SpringBoot 框架,采用 MVC 分层的结构,实现 User 表的增删查改操作。
user表结构:CREATE TABLE `user` (`id` INT(11) NOT NULL AUTO_INCREMENT,`username` VARCHAR(50) NOT NULL,`password` VARCHAR(255) NOT NULL,`email` VARCHAR(255) NOT NULL,`created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,`updated_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,PRIMARY KEY (`id`),UNIQUE KEY `username_UNIQUE` (`username`),UNIQUE KEY `email_UNIQUE` (`email`)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
User来表示用户:package com.example.demo.entity;import javax.persistence.*;import java.time.LocalDateTime;@Entity@Table(name = "user")public class User {@Id@GeneratedValue(strategy = GenerationType.IDENTITY)private Long id;@Column(name = "username", nullable = false, unique = true)private String username;@Column(name = "password", nullable = false)private String password;@Column(name = "email", nullable = false, unique = true)private String email;@Column(name = "created_at", nullable = false, columnDefinition = "TIMESTAMP DEFAULT CURRENT_TIMESTAMP")private LocalDateTime createdAt;@Column(name = "updated_at", nullable = false, columnDefinition = "TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")private LocalDateTime updatedAt;// Getters and setters}
UserRepository接口来处理数据库操作:package com.example.demo.repository;import com.example.demo.entity.User;import org.springframework.data.jpa.repository.JpaRepository;import org.springframework.stereotype.Repository;@Repositorypublic interface UserRepository extends JpaRepository<User, Long> {}
UserService类来处理业务逻辑:package com.example.demo.service;import com.example.demo.entity.User;import com.example.demo.repository.UserRepository;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import java.util.List;import java.util.Optional;@Servicepublic class UserService {@Autowiredprivate UserRepository userRepository;public List<User> getAllUsers() {return userRepository.findAll();}public Optional<User> getUserById(Long id) {return userRepository.findById(id);}public User createUser(User user) {return userRepository.save(user);}public User updateUser(Long id, User user) {User existingUser = userRepository.findById(id).orElse(null);if (existingUser != null) {existingUser.setUsername(user.getUsername());existingUser.setPassword(user.getPassword());existingUser.setEmail(user.getEmail());return userRepository.save(existingUser);}return null;}public void deleteUser(Long id) {userRepository.deleteById(id);}}
UserController类来处理 HTTP 请求:package com.example.demo.controller;import com.example.demo.entity.User;import com.example.demo.service.UserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.http.ResponseEntity;import org.springframework.web.bind.annotation.*;import java.util.List;@RestController@RequestMapping("/api/users")public class UserController {@Autowiredprivate UserService userService;@GetMappingpublic List<User> getAllUsers() {return userService.getAllUsers();}@GetMapping("/{id}")public ResponseEntity<User> getUserById(@PathVariable Long id) {return userService.getUserById(id).map(ResponseEntity::ok).orElse(ResponseEntity.notFound().build());}@PostMappingpublic User createUser(@RequestBody User user) {return userService.createUser(user);}@PutMapping("/{id}")public ResponseEntity<User> updateUser(@PathVariable Long id, @RequestBody User user) {User updatedUser = userService.updateUser(id, user);if (updatedUser != null) {return ResponseEntity.ok(updatedUser);} else {return ResponseEntity.notFound().build();}}@DeleteMapping("/{id}")public ResponseEntity<Void> deleteUser(@PathVariable Long id) {userService.deleteUser(id);return ResponseEntity.noContent().build();}}
02
解决办法:
我们启动程序后可能会有些错误提示信息,我们将错误信息作为输入:
以下是一些建议:
createdAt 属性设置了一个有效值。例如:User user = new User();user.setName("John Doe");user.setEmail("[email protected]");user.setCreatedAt(new Date()); // 设置创建时间
@CreationTimestamp注解自动设置创建时间。例如:@Entitypublic class User {// ... 其他属性@CreationTimestamp@Column(name = "created\_at", nullable = false)private Date createdAt;// ... getter 和 setter}
save()方法。例如:@Servicepublic class UserService {@Autowiredprivate UserRepository userRepository;public User createUser(User user) {// 设置创建时间user.setCreatedAt(new Date());// 保存实体return userRepository.save(user);}}
Session 对象,确保在调用 persist()方法之前设置了所有必要的属性。例如:Session session = sessionFactory.openSession();Transaction transaction = session.beginTransaction();User user = new User();user.setName("John Doe");user.setEmail("[email protected]");user.setCreatedAt(new Date()); // 设置创建时间session.persist(user);transaction.commit();session.close();
我们根据混元大模型给的答案,对程序进行调整,调整内容如下:
修改 User 实体:
package com.example.demo.entity;import lombok.Data;import org.hibernate.annotations.CreationTimestamp;import javax.persistence.*;import java.time.LocalDateTime;@Entity@Data@Table(name = "user")public class User {@Id@GeneratedValue(strategy = GenerationType.IDENTITY)private Long id;@Column(name = "username", nullable = false, unique = true)private String username;@Column(name = "password", nullable = false)private String password;@Column(name = "email", nullable = false, unique = true)private String email;// @Column(name = "created_at", nullable = false, columnDefinition = "TIMESTAMP DEFAULT CURRENT_TIMESTAMP")@CreationTimestamp@Column(name = "created_at", nullable = false)private LocalDateTime createdAt;// @Column(name = "updated_at", nullable = false, columnDefinition = "TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")@CreationTimestamp@Column(name = "updated_at", nullable = false)private LocalDateTime updatedAt;// Getters and setters}
03
04
混元大模型是一款非常优秀的大模型,可以提高我们工作效率,同样,我们也要学会使用大模型的正确姿势,对问题的描述也要足够的准确,这样大模型才能更好的为我们解决问题。
迄今为止 AI 工具的出现主要还是为了便利人类,而不是代替人类。加以学习利用,使其成为我们的优秀的工作助手。